Improvement in stove-pipe ventilators



NTED STATES PATENT CFFIcnaa JOHNSON BRIGGS, OF TORONTO, ONTARIO, CANADA.

IMPROVEMENT IN STVE-PIPE VENTILATORS.

Specification forming part of Letters Patent N o. 184,828, dated November 28, 1876;V application filed v October 24, 1876.

To all whom-it may concern Be it known that I, JOHNSON BRIGGS, of the city of Toronto, in the county of York, in the Province of Ontario, in the Dominion of Canada, have invented certain new and useful Improvements in Stove-Pipe Ventilators 5 and I do hereby declare that the following is a full, clear, and exact description of the same.

This invention has for its object to ventilate an apartment in which a stove is located, or through which a stove-pipe runs; and the nature of the invention relates to a means for l inletting the foul air to the pipe-due without the probability of the smoke escaping therefrom into the room byan adverse draft, or without stopping the draft in the smokepipe; and it consists of a tubular connection inserted between tlie joints of a stove-pipe, having a foulair inlet thereto, and an exterior covering, chamber, or passage, the lower end of which is furnished with avregister, and which tubular connection or drum may have internally a ameter, having an inlet foul-'air aperture, C, which is covered by .an exterior casing, D, forming a vfoul-air passage, E, which extends downward a suitable distance, in the lower end of which is placed any ordinary register, G, for regulating or stopping the inlet-current ot' foul air which passes trom the apartment through the register, up the passage E, and thence into the 'ue through the opening G, as shown by the arrows. Below the opening C in the tube B is placed a damper, G', which preferably is constructed of an axial shaft, having three or four radial wings, H, of wirecloth or perforated, to allow the products ot' combustion to pass, and which damper, by rapid turning, can be freed from accumulation of soot. I is a damper of ordinary construction, diametrically smaller than the tlue, and located above the aperture C, so that when a tire is not used it maybe closed and yet allow the foul air to pass.

I claim as my invention- A ventilator connection for stovepipes, constructed of the tubular continuation B, having an aperture, C, inclosed by a covering, D, forming a passage, E, furnished with a register, Gr, and with or without the damper H, whereby the foul air ascends in the passage E before entering the smokeilue, as set forth.

. JOHNSON BRIGGS. Witnesses:

J onN GRrsT, F. J. Ross. 

